Bren E. Backhaus

0000-0001-8534-7502

astro-ph.GAastro-ph.COastro-ph.IMastro-ph.SREarly universeGalaxies and clusters

On Valency

published · living versions

W_jz6ja4qx·v1 · currentpublished

SPAM: Survey Overview and JWST/NIRCam Multi-Band Photometry Catalog

with Rebecca L. Larson, Kelcey Davis, Hollis B. Akins, Steven L. Finkelstein +44

1 version

Preprints & journals

63 papers in the corpus · 2020–2026

The gradual decline of Ly

\alpha

visibility in the CANDELS fields: evidence for the combined effects of galaxy evolution and reionization2609.00199v1 · L. Napolitano, L. Pentericci, A. Ferrara et al.2026 · 0 citationsarXiv

Ripples in the OCEANS: Broad Line Variability of Little Red Dots2608.12487v1 · Madisyn Brooks, Kelcey Davis, Jonathan R. Trump et al.2026 · 0 citationsarXiv

Implications of Broad [O III] 4364 and UV Line Emission in Two Little Red Dots at z ~ 7 - 82608.04101v1 · Casey Papovich, Kaila Ronayne, Weida Hu et al.2026 · 0 citationsarXiv

Deep Spectroscopic Follow-Up of Maisie's Galaxy -- A Typical Galaxy in the Early Universe2607.08749v1 · Rebecca L. Larson, Taylor A. Hutchison, Steven L. Finkelstein et al.2026 · 0 citationsarXiv

The MIRI Early Obscured-AGN Wide Survey (MEOW): A Population of Hidden AGN at

z \gtrsim 5

Revealed by JWST/MIRI Imaging2607.02666v1 · Gene C. K. Leung, Anna-Christina Eilers, Ryan Endsley et al.2026 · 0 citationsarXiv

Hunting Wandering 3<z<8 Black Holes: Spatial Offsets in Ionization Ratio and Continuum Emission2606.30715v2 · Urvi Thakurdesai, Anthony J. Taylor, Steven L. Finkelstein et al.2026 · 0 citationsarXiv

MEGA and SMILES Find Fewer Dusty Galaxies than Expected at Cosmic Noon2606.17146v1 · Bren E. Backhaus, Allison Kirkpatrick, Kurt Hamblin et al.2026 · 0 citationsarXiv

OCEANS of Absorption: High-resolution NIRSpec Spectroscopy Reveals Diverse Balmer-line Absorption in Little Red Dots2606.00258v1 · Kelcey Davis, Madisyn Brooks, Raymond C. Simons et al.2026 · 0 citationsarXiv

A Rapid Evolution in the Observed Mbh/M* Relation at z > 3 Revealed via Spectro-photometric SED-Modeling2605.30414v1 · Ansh R. Gupta, Anthony Taylor, Emma Curtis-Lake et al.2026 · 1 citationarXiv

Massive Galaxies Form Early and Gray: Stellar Assembly and Dust Attenuation at

\mathbf{z>3.5}

from CAPERS2605.13966v1 · Katherine Chworowsky, Steven L. Finkelstein, Anthony J. Taylor et al.2026 · 0 citationsarXiv

Using Ly

\alpha

Transmitted Spectrum to Probe IGM Transmission and Identify Ionized Structures in Cosmic Reionization2605.02539v1 · Weida Hu, Casey Papovich, Lu Shen et al.2026 · 0 citationsarXiv

The GlimmIr: Spectroscopic Variability in a z~7 LRD Indicates Rapid Changes in Both the Narrow and Broad Line Regions2604.25991v1 · Erini Lambrides, Taylor A. Hutchison, Rebecca L. Larson et al.2026 · 0 citationsarXiv

MEOW: The increase in the obscured AGN fraction in mid-infrared from 0 < z < 6 with JWST MIRI2603.22393v2 · Teodora-Elena Bulichi, Gene C. K. Leung, Anna-Christina Eilers et al.2026 · 0 citations2026 ApJ 1008 197

Extreme Emission Line Galaxies in CEERS Are Powered by Star Formation, not AGN2602.23310v1 · Kelcey Davis, Madisyn Brooks, Jonathan R. Trump et al.2026 · 0 citationsarXiv

A Morphology Catalog of Galaxies in CEERS: Evolution in the Size and Color Gradients of Galaxies Since Cosmic Dawn2602.22306v1 · Elizabeth J. McGrath, Steven L. Finkelstein, Guillermo Barro et al.2026 · 4 citationsApJL, 999, L6 (2026)

HELM's deep: Highly Extincted Low-Mass galaxies seen by JWST2512.14822v1 · L. Bisigello, G. Gandolfi, A. Grazian et al.2025 · 1 citationarXiv

Beyond the Monsters: A More Complete Census of Black Hole Activity at Cosmic Dawn2511.19609v1 · Madisyn Brooks, Jonathan R. Trump, Raymond C. Simons et al.2025 · 2 citationsarXiv

The CEERS Photometric and Physical Parameter Catalog2510.08743v1 · Isa G. Cox, Jeyhan S. Kartaltepe, Micaela B. Bagley et al.2025 · 3 citationsarXiv

Mysteries of Capotauro: investigating the puzzling nature of an extreme F356W-dropout2509.01664v2 · Giovanni Gandolfi, Giulia Rodighiero, Marco Castellano et al.2025 · 7 citationsarXiv

MEGA: Spectrophotometric SED Fitting of Little Red Dots Detected in JWST MIRI2508.20177v2 · Kaila Ronayne, Casey Papovich, Allison Kirkpatrick et al.2025 · 1 citationarXiv

Optical Strong Line Ratios Cannot Distinguish Between Stellar Populations and Accreting Black Holes at High Ionization Parameters and Low Metallicities2506.21660v1 · Nikko J. Cleri, Grace M. Olivier, Bren E. Backhaus et al.2025 · 8 citationsarXiv

AGNBoost: A Machine Learning Approach to AGN Identification with JWST/NIRCam+MIRI Colors and Photometry2506.03130v3 · Kurt Hamblin, Allison Kirkpatrick, Bren E. Backhaus et al.2025 · 0 citationsarXiv

Galaxies in the Epoch of Reionization Are All Bark and No Bite -- Plenty of Ionizing Photons, Low Escape Fractions2505.08870v2 · Casey Papovich, Justin W. Cole, Weida Hu et al.2025 · 7 citationsarXiv

MEGA Mass Assembly with JWST: The MIRI EGS Galaxy and AGN Survey2503.19078v2 · Bren E. Backhaus, Allison Kirkpatrick, Guang Yang et al.2025 · 0 citationsarXiv

Emission-Line Diagnostics at z>4: [OIII]{\lambda}4363/H\gamma2502.03519v1 · Bren E. Backhaus, Nikko J. Cleri, Jonathan R. Trump et al.2025 · 1 citationarXiv

Ultra High-Redshift or Closer-by, Dust-Obscured Galaxies? Deciphering the Nature of Faint, Previously Missed F200W-Dropouts in CEERS2502.02637v2 · G. Gandolfi, G. Rodighiero, L. Bisigello et al.2025 · 3 citationsA&A 708, A195 (2026)

Unveiling the Dark Side of UV/Optical Bright Galaxies: Optically Thick Dust Absorption2411.08100v1 · Yingjie Cheng, Mauro Giavalisco, Bren E. Backhaus et al.2024 · 2 citationsThe Astrophysical Journal, 2025, Volume 979, Issue 1, id.71

NGDEEP: The Star Formation and Ionization Properties of Galaxies at

1.7 < z < 3.4

2410.23349v2 · Lu Shen, Casey Papovich, Jasleen Matharu et al.2024 · 8 citationsarXiv

A luminous and young galaxy at z = 12.33 revealed by a JWST/MIRI detection of Hα and [O iii].39866550 · Zavala, Jorge A, Castellano, Marco, Akins, Hollis B et al.2025 · 70 citationsNature astronomy. 2025;9(1):155-164

Here There Be (Dusty) Monsters: High Redshift AGN are Dustier Than Their Hosts2410.07340v1 · Madisyn Brooks, Raymond C. Simons, Jonathan R. Trump et al.2024 · 1 citationarXiv

Emission-Line Ratios and Ionization Conditions of CEERS Star-Forming Galaxies with JWST/NIRSpec2410.03784v1 · Ansh R. Gupta, Allison Kirkpatrick, Vital Fernandez et al.2024 · 1 citationarXiv

Broad-Line AGN at 3.5<z<6: The Black Hole Mass Function and a Connection with Little Red Dots2409.06772v2 · Anthony J. Taylor, Steven L. Finkelstein, Dale D. Kocevski et al.2024 · 10 citationsarXiv

The Abundance and Properties of Barred Galaxies out to

z \sim

4 Using

\textit{JWST}

CEERS Data2409.06100v2 · Yuchen Guo, Shardha Jogee, Eden Wise et al.2024 · 2 citationsarXiv

Physical properties of strong 1 < z < 3 Balmer and Paschen lines emitters observed with JWST2404.09659v3 · L.-M. Seill'e, V. Buat, V. Fern'andez et al.2024 · 8 citationsA&A 689, A102 (2024)

Physical properties of extreme emission-line galaxies at

z\sim 4-9

from the JWST CEERS survey2403.05362v2 · M. Llerena, R. Amor'in, L. Pentericci et al.2024 · 29 citationsA&A 691, A59 (2024)

The Next Generation Deep Extragalactic Exploratory Public Near-Infrared Slitless Survey Epoch 1 (NGDEEP-NISS1): Extra-Galactic Star-formation and Active Galactic Nuclei at 0.5 < z < 3.62312.09972v4 · Nor Pirzkal, Barry Rothberg, Casey Papovich et al.2023 · 19 citationsarXiv

A Census from JWST of Extreme Emission Line Galaxies Spanning the Epoch of Reionization in CEERS2312.07799v1 · Kelcey Davis, Jonathan R. Trump, Raymond C. Simons et al.2023 · 14 citationsarXiv

Evidence for a Shallow Evolution in the Volume Densities of Massive Galaxies at

z=4

8

from CEERS2311.14804v1 · Katherine Chworowsky, Steven L. Finkelstein, Michael Boylan-Kolchin et al.2023 · 4 citationsarXiv

The Complete CEERS Early Universe Galaxy Sample: A Surprisingly Slow Evolution of the Space Density of Bright Galaxies at z ~ 8.5-14.52311.04279v1 · Steven L. Finkelstein, Gene C. K. Leung, Micaela B. Bagley et al.2023 · 212 citationsarXiv

NGDEEP Epoch 1: Spatially Resolved H

\alpha

Observations of Disk and Bulge Growth in Star-Forming Galaxies at

z \sim

0.6-2.2 from JWST NIRISS Slitless Spectroscopy2310.13745v2 · Lu Shen, Casey Papovich, Jasleen Matharu et al.2023 · 1 citationarXiv

CEERS Key Paper VIII: Emission Line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z>22307.09503v3 · Bren E. Backhaus, Jonathan R. Trump, Nor Pirzkal et al.2023 · 32 citationsarXiv

Spectroscopic Confirmation of CEERS NIRCam-selected Galaxies at

\boldsymbol{z \simeq 8-10}

2304.05378v2 · Pablo Arrabal Haro, Mark Dickinson, Steven L. Finkelstein et al.2023 · 199 citationsAstrophys. J. Lett. 951, L22 (2023)

CEERS: Diversity of Lyman-Alpha Emitters during the Epoch of Reionization2304.05385v1 · Intae Jung, Steven L. Finkelstein, Pablo Arrabal Haro et al.2023 · 17 citationsarXiv

CLEAR: Survey Overview, Data Analysis and Products2303.09570v1 · Raymond C. Simons, Casey Papovich, Ivelina G. Momcheva et al.2023 · 23 citationsarXiv

The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey2302.05466v1 · Micaela B. Bagley, Nor Pirzkal, Steven L. Finkelstein et al.2023 · 78 citationsarXiv

CEERS Spectroscopic Confirmation of NIRCam-Selected z > 8 Galaxy Candidates with JWST/NIRSpec: Initial Characterization of their Properties2301.09482v2 · Seiji Fujimoto, Pablo Arrabal Haro, Mark Dickinson et al.2023 · 165 citationsarXiv

Using [Ne V]/[Ne III] to Understand the Nature of Extreme-Ionization Galaxies2301.07745v2 · Nikko J. Cleri, Grace M. Olivier, Taylor A. Hutchison et al.2023 · 45 citationsarXiv

CEERS: Spatially Resolved UV and mid-IR Star Formation in Galaxies at 0.2 < z < 2.5: The Picture from the Hubble and James Webb Space Telescopes2301.05727v2 · Lu Shen, Casey Papovich, Guang Yang et al.2023 · 28 citationsarXiv

CEERS Key Paper V: A triality on the nature of HST-dark galaxies2211.00045v3 · Pablo G. P'erez-Gonz'alez, Guillermo Barro, Marianna Annunziatella et al.2022 · 131 citationsApJL 946, L16 https://iopscience.iop.org/article/10.3847/2041-8213/acb3a5

CEERS Key Paper III: The Diversity of Galaxy Structure and Morphology at z=3-9 with JWST2210.14713v2 · Jeyhan S. Kartaltepe, Caitlin Rose, Brittany N. Vanderhoof et al.2022 · 155 citationsarXiv

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